Climate and monthly weather forecastWheaton, MO
Climate and monthly weather forecast
Weather in January
January, like December, in Wheaton, Missouri, is an icy winter month, with an average temperature fluctuating between 42.4°F (5.8°C) and 27°F (-2.8°C). With average high temperatures of 42.4°F (5.8°C) and lows of 27°F (-2.8°C), January is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Wheaton, is a frosty month, with an average temperature varying between 46.4°F (8°C) and 30.6°F (-0.8°C). Wheaton observes a minor difference in average high-temperatures between January's 42.4°F (5.8°C) and February's 46.4°F (8°C). Weather in February »Weather in March
The first month of the spring, March, is a mild month in Wheaton, Missouri, with an average temperature varying between 57.2°F (14°C) and 39.7°F (4.3°C). March's arrival brings a change in high-temperatures, moving from a frosty 46.4°F (8°C) in February to a refreshing 57.2°F (14°C). Weather in March »Weather in April
April in Wheaton, Missouri, is a refreshing spring month, with an average temperature fluctuating between 66.7°F (19.3°C) and 47.8°F (8.8°C). April's arrival coincides with a temperature rise, moving from March's moderate 57.2°F (14°C) to a still refreshing 66.7°F (19.3°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Wheaton, Missouri, with an average temperature fluctuating between 75.6°F (24.2°C) and 56.3°F (13.5°C). The arrival of May witnesses a small shift in the average high-temperature, moving from a refreshing 66.7°F (19.3°C) in April to a warm 75.6°F (24.2°C). Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Wheaton, Missouri, with an average temperature ranging between min 66.2°F (19°C) and max 86°F (30°C). The shift into June is accompanied by a temperature increase, with the average high-temperature rising from a warm 75.6°F (24.2°C) in May to a tropical 86°F (30°C). Weather in June »Weather in July
July, like June, is another hot summer month in Wheaton, Missouri, with an average temperature fluctuating between 68.9°F (20.5°C) and 88.9°F (31.6°C). With an average high-temperature of 88.9°F (31.6°C) and an average low-temperature of 68.9°F (20.5°C), July is the warmest month. In July, the average heat index is evaluated at an extremely hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Wheaton, Missouri, with an average temperature fluctuating between 66.7°F (19.3°C) and 87.3°F (30.7°C). Shifting into August, Wheaton records an average high-temperature of a still tropical 87.3°F (30.7°C), presenting minor fluctuations compared to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Wheaton, is also a moderately hot month, with an average temperature fluctuating between 60.4°F (15.8°C) and 80.1°F (26.7°C). The start of September signals a gentle decrease in the average high-temperature, transitioning from a tropical 87.3°F (30.7°C) in August to a warm 80.1°F (26.7°C). Weather in September »Weather in October
October, like September, in Wheaton, Missouri, is another refreshing autumn month, with an average temperature ranging between min 48.9°F (9.4°C) and max 67.3°F (19.6°C). Welcoming October, Wheaton observes a shift in the average high-temperature, falling from September's warm 80.1°F (26.7°C) to a refreshing 67.3°F (19.6°C). Weather in October »Weather in November
November, the last month of the autumn in Wheaton, is another mild month, with an average temperature fluctuating between 55.6°F (13.1°C) and 38.5°F (3.6°C). The beginning of November marks a decrease in the average high-temperature, transitioning from an enjoyable 67.3°F (19.6°C) in October to a moderate 55.6°F (13.1°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Wheaton, Missouri, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 45.5°F (7.5°C). In December, the meteorological conditions alter, with the average high-temperature shifting from a refreshing 55.6°F (13.1°C) in November to a chilly 45.5°F (7.5°C). Weather in December »Updated: Aug 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest period tends to be January, when average temperatures fluctuate between a high of 42.4°F (5.8°C) and a low of 27°F (-2.8°C).
January, July, August and October, with an average relative humidity of 73%, are the least humid months.
Throughout the year, there are 152.1 rainfall days, and 34.45" (875mm) of precipitation is accumulated.
January through May, November and December are months with snowfall.
The months with the most snowfall are January and February, with an average 2.17" (55mm) of accumulated snow.
Throughout the year, there are 16.6 snowfall days, and 7.2" (183mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 5.3h of sunshine.
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the least rainfall. Rain falls for 8.8 days and accumulates 1.65" (42mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The most humid month is May, with an average relative humidity of 78%.
May is the month with the most rainfall. Rain falls for 17.2 days and accumulates 5" (127mm) of precipitation.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June through October are months without snowfall.
The month with the longest days is June, with an average of 14h and 36min of daylight.
The months with the most sunshine are June and July, with an average of 10.6h of sunshine.
In Wheaton, July is identified by the average highest temperatures, reaching a peak of 88.9°F (31.6°C) and a low of 68.9°F (20.5°C).
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average temperature
Wheaton, MO
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (42.4°F).
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure
Wheaton, MO
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Wheaton, MO
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.9mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9mph
The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Wheaton, MO
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall
Wheaton, MO
- Average rainfall in January:
2.01" - Average rainfall in February:
1.65" - Average rainfall in March:
3.07" - Average rainfall in April:
3.5" - Average rainfall in May:
5" - Average rainfall in June:
2.91"
- Average rainfall in July:
3.82" - Average rainfall in August:
3.35" - Average rainfall in September:
2.68" - Average rainfall in October:
2.87" - Average rainfall in November:
1.81" - Average rainfall in December:
1.77"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days
Wheaton, MO
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.4 days).
Average snowfall
Wheaton, MO
- Average snowfall in January:
2.17" - Average snowfall in February:
2.17" - Average snowfall in March:
1.14" - Average snowfall in April:
0.04" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The months with the highest snowfall are January and February (2.17").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Wheaton, MO
- Average snowfall days in January:
4 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3.2 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Wheaton, MO
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 30min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days
Wheaton, MO
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
12 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
19 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index
Wheaton, MO
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Wheaton, MO
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Wheaton, MO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
